XML 137 R116.htm IDEA: XBRL DOCUMENT v3.25.0.1
Note 18 - Earnings and Dividends Per Share - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net income attributable to JHG $ 408.9 $ 392.0 $ 372.4
Allocation of earnings to participating stock-based awards (9.9) (11.2) (11.3)
Net income attributable to JHG common shareholders $ 399.0 $ 380.8 $ 361.1
Weighted-average common shares outstanding — basic (in shares) 155.4 160.4 161.7
Dilutive effect of nonparticipating stock-based awards (in shares) 0.4 0.1 0.3
Weighted-average common shares outstanding — diluted (in shares) 155.8 160.5 162.0
Basic (in dollars per share) $ 2.57 $ 2.37 $ 2.23
Diluted (in dollars per share) $ 2.56 $ 2.37 $ 2.23